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42 results on '"Im, Soyoung"'

3. Well-Differentiated Papillary Mesothelial Tumor of the Scrotum with Suspicious Invasion.

Author

Im, Soyoung, Yoo, Je Mo, and Cho, Uiju

Subjects
*SCROTUM, *PERITONEUM, *HYDROCELE, *TUMORS, *CELL anatomy, *PLEURA cancer
Abstract

Well-differentiated papillary mesothelial tumor (WDPMT) is a distinct form of mesothelioma with low malignant potential and is mostly found in the peritoneal cavity. It consists of mesothelial cells with papillary structure and bland cytology. We report a rare case of WDPMT with suspicious invasive foci in the tunica vaginalis. WDPMT with invasive foci is known to have a tendency for recurrence. Therefore, careful attention should be given to properly diagnosing and treating this rare entity. [ABSTRACT FROM AUTHOR]

Published
2024
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12. Primary angiosarcoma of the breast: a case report

Author

Im, Soyoung, Chae, Byung Joo, Kim, Sung Hun, Kang, Bong-Joo, Song, Byung Joo, and Lee, Ahwon

Subjects
Case Report
Abstract

Background: Primary angiosarcoma of the breast is extremely rare, accounting for less than 0.05% of all primary malignancies of the breast. Here, we report here a case of primary angiosarcoma with full description of radiology and histology, including electron microscopic findings. Case presentation: A 39-year-old woman complained of a diffuse hard mass in her right breast. She did not have any history of radiation exposure. Ultrasonography revealed a 7 cm sized mass with an irregular anechoic cystic portion replacing the entire right breast. Modified radical mastectomy was performed. The diagnosis of intermediate grade angiosarcoma was made by microscopic examination, immunohistochemical staining, and electron microscopic examination. The patient underwent four cycles of adriamycin-ifosfamide chemotherapy and received radiation therapy. Multiple bone metastases occurred 9 months after surgery and palliative treatment was given. Follow up was lost at post-operative 22 months. Conclusions: We report a rare case of intermediate grade primary angiosarcoma with detailed radiological and histological findings. Despite postoperative chemoradiation therapy, multiple metastases suggest that intermediate grade may have a more aggressive behavior.

Published
2019

38. Palisading and Verocay Body Prominent Orbital Leiomyosarcoma, Masquerading as a Schwannoma.

Author

Im S, Cho U, Choi HJ, Lee SW, and Yoo C

Subjects
Biomarkers, Tumor analysis, Craniotomy, Diagnosis, Differential, Humans, Leiomyosarcoma pathology, Leiomyosarcoma therapy, Male, Middle Aged, Muscle Neoplasms pathology, Muscle Neoplasms therapy, Oculomotor Muscles diagnostic imaging, Oculomotor Muscles surgery, Radiotherapy, Adjuvant, Leiomyosarcoma diagnosis, Muscle Neoplasms diagnosis, Neurilemmoma diagnosis, Oculomotor Muscles pathology
Published
2019
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39. Primary angiosarcoma of the breast: a case report.

Author

Im S, Chae BJ, Kim SH, Kang BJ, Song BJ, and Lee A

Abstract

Background: Primary angiosarcoma of the breast is extremely rare, accounting for less than 0.05% of all primary malignancies of the breast. Here, we report here a case of primary angiosarcoma with full description of radiology and histology, including electron microscopic findings., Case Presentation: A 39-year-old woman complained of a diffuse hard mass in her right breast. She did not have any history of radiation exposure. Ultrasonography revealed a 7 cm sized mass with an irregular anechoic cystic portion replacing the entire right breast. Modified radical mastectomy was performed. The diagnosis of intermediate grade angiosarcoma was made by microscopic examination, immunohistochemical staining, and electron microscopic examination. The patient underwent four cycles of adriamycin-ifosfamide chemotherapy and received radiation therapy. Multiple bone metastases occurred 9 months after surgery and palliative treatment was given. Follow up was lost at post-operative 22 months., Conclusions: We report a rare case of intermediate grade primary angiosarcoma with detailed radiological and histological findings. Despite postoperative chemoradiation therapy, multiple metastases suggest that intermediate grade may have a more aggressive behavior., Competing Interests: None., (IJCEP Copyright © 2019.)

Published
2019

40. Application of adipocyte-related antibodies in undifferentiated sarcomas to identify dedifferentiated liposarcomas based on histological and clinical analysis.

Author

Im S, Park HS, Cho U, Yoo C, Jung JH, Choi HJ, and Yoo J

Abstract

Background: Due to morphologic similarities between undifferentiated sarcoma (US) and dedifferentiated liposarcoma (DDLPS), some portions of US could be identified as DDLPS. In this study, we applied adipocyte-related antibodies in order to discriminate possible cases of DDLPS from US., Materials and Methods: A total of 46 cases, previously diagnosed as US, were examined. Immunohistochemistry for MDM2, CDK4, calreticulin, FABP4, and stathmin were performed. Histological findings were reviewed and clinical data was analyzed retrospectively., Results: MDM2, CDK4, calreticulin, FABP4, and stathmin were positive in 17 (37.0%), 14 (30.4%), 3 (6.5%), 1 (2.2%), and 12 (26.1%) of the total 46 cases, respectively. MDM2/CDK4 positive cases showed more frequent positivity for calreticulin/FABP4/stathmin. Survival analysis, based on staining pattern, revealed a significantly better survival in the group where either MDM2 and CDK4 were positive and at least one of calreticulin, FABP4, or stathmin staining were positive., Conclusions: We conclude that when either MDM2-positive or CDK4-positive cases show any other positive results for calreticulin, FABP4, or stathmin, they have a significantly better survival and the possibility of DDLPS should be considered. Additional use of calreticulin, FABP4, or stathmin immunohistochemistry helps us to narrow the pool for further studies such as molecular analysis for a definite diagnosis., Competing Interests: None., (IJCEP Copyright © 2018.)

Published
2018

41. Florid cystic endosalpingiosis associated with a retroperitoneal leiomyoma mimicking malignancy: a case report.

Author

Im S, Park HS, Cho U, Yoo C, Jung JH, Yoo J, and Choi HJ

Abstract

Florid cystic endosalpingiosis (FCE) is a rare type of endosalpingiosis that presents as a mass-like lesion. Here we report an unusual case of FCE associated with a retroperitoneal leiomyoma. A 46-year old female presented with a palpable abdominal mass. A pelvic CT revealed a 23.5×16.3×9.4 cm sized multilocular cystic and solid mass in the retroperitoneum. Surgical excision of the mass was performed. Microscopically, the cystic spaces were lined by a single layer of ciliated tubal epithelium. The solid areas consisted of thick bundles of spindle cells. There were no cytologic atypia, mitosis or necrosis. The spindle cells were positive for actin and desmin, and were negative for c-kit, CD34, S100 and HMB-45, confirming the diagnosis of FCE associated with retroperitoneal leiomyoma., Competing Interests: None., (IJCEP Copyright © 2017.)

Published
2017

42. Primary perivascular epithelioid cell tumor in the rectum: a case report and review of the literature.

Author

Im S, Yoo C, Jung JH, Choi HJ, Yoo J, and Kang CS

Subjects
Adolescent, Adult, Biomarkers, Tumor analysis, Biopsy, Child, Colonoscopy, Female, Humans, Immunohistochemistry, Intestinal Polyps chemistry, Intestinal Polyps surgery, Intestinal Polyps ultrastructure, Male, Melanosomes pathology, Middle Aged, Perivascular Epithelioid Cell Neoplasms chemistry, Perivascular Epithelioid Cell Neoplasms surgery, Perivascular Epithelioid Cell Neoplasms ultrastructure, Predictive Value of Tests, Rectal Neoplasms chemistry, Rectal Neoplasms surgery, Rectal Neoplasms ultrastructure, Intestinal Polyps pathology, Perivascular Epithelioid Cell Neoplasms pathology, Rectal Neoplasms pathology
Abstract

Perivascular epithelioid cell tumor (PEComa) is a rare collection of tumors arising in a wide array of anatomic locations. It is characterized by the presence of a peculiar population of myomelanocytic marker-positive perivascular epithelioid cells, and is commonly detected in the uterus. The colorectal area is an uncommon site for primary PEComa. In this study, we describe a 17-year-old patient presenting with a rectal polyp. Histologically, the tumor consisted of sheets of round to polygonal epithelioid cells with clear and granular cytoplasm, and a prominent capillary network. Some of the tumor cells were positive for Fontana-Masson staining. Immunohistochemically, the tumor cells were positive for HMB-45, and were negative for cytokeratin, vimentin, S-100 protein, actin, desmin, EMA, CD34, and c-kit. After finding melanosomes or premelanosomes at the ultrastructural level, the diagnosis of PEComa was made. Although PEComa arising within the intestinal tract is unusual and clinically unexpected, PEComa should be considered in the differential diagnosis of rectal polypoid lesions., (Copyright © 2013 Elsevier GmbH. All rights reserved.)

Published
2013
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